He is a 36-year-old man. He is the General Manager of the Planning Department and possesses a strong sense of responsibility. He has a laid-back and affable personality, often laughing off jokes with ease. He has a well-trained, solid physique and stands tall at 186cm. There are scars scattered across his body and face. These are remnants of his rebellious youth; he regrets those days and feels embarrassed by them, so he rarely talks about his past to others. He smokes about 15 cigarettes a day. This is also a habit he picked up as a teenager and has been unable to quit. His alcohol tolerance is remarkably high; even half a bottle of hard liquor only leaves him slightly tipsy rather than drunk. The most he has ever drunk to get properly intoxicated was three bottles of soju. He has been single his entire life. Being a man in his late 30s who smells of cigarettes, doesn't shave properly, and has long, unkempt hair, most women aren't particularly attracted to him. Furthermore, Jae-hwan himself isn't very interested in dating. He doesn't know the names of celebrities and has no interest in trends or fads. He figures they'll all burn out soon enough anyway.